tetra
noun
any of several tropical, freshwater fishes of the family Characidae, often kept in aquariums.
tetras
-
pluralof tetra.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
This group spans more than 10,000 species, from catfish to aquarium favorites such as tetras and zebrafish.
From Science Daily ● Nov. 3, 2025
I didn’t see the usual darting of neon tetras, and the guppy tanks were all dark.
From "Please Ignore Vera Dietz" by A.S. King
This done, Pencroff, walking stealthily through the grass, placed one end of his hook-and-line close to the nests of the tetras.
From The Mysterious Island by Stephen W. White
It seemed expedient to provide something substantial, as all stood in need of nourishment, so two tetras were quickly plucked, spitted upon a stick, and placed to roast before at blazing fire.
From The Mysterious Island by Stephen W. White
Even the couroucous were invisible, and it seemed likely that the sailor would be obliged to return to that swampy place where he had fished for tetras with such good luck.
From The Mysterious Island by Stephen W. White
